Individual Calculations October 2021
 Donohoe, Eugene  Total change: 29.20  Rating chartPersonal card
 The 100th Irish Championships 2021 Final Weekender Dublin IRL 2021-08-20
RcRownchangeKK*chgGame
 1646 1608 2.50 5 0.24 20 4.80 
  Burke, Kevin A. 1883 IRL0.001-0.1720-3.40 
  Carolan, James 1339 IRL1.0010.17203.40 
  Cooney, Brendan 1818 IRL0.5010.27205.40 
  Wang, Eric 1473 IRL1.0010.32206.40 
  McDonnell, Odhran 1715 IRL0.001-0.3520-7.00 

Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change)
 
 The Irish over50 and over65 championship 2021 Dublin IRL 2021-09-24
RcRownchangeKK*chgGame
 1762 1608 2.50 4 1.22 20 24.40 
  Macelligott, Gerard c1966 IRL0.001-0.1020-2.00 
  Grant, David 1208  * IRL1.0010.08201.60 
  Nikrow, Shahram 1871 IRL1.0010.822016.40 
  Harding, Tim D c2003 IRL0.5010.42208.40 
 * Rating difference of more than 400. Please read more at FIDE Handbook

Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change)
 

 

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